Chapter 9 (preface, warning, caution, notes) Flashcards
LOCKOUT (preface, W, C)
Preface
The most reliable indication of engine power is TGT TEMP
Warning
Going to lockout does not remove limits for
- Maximum Fuel Flow
- Ng SPEED
If exceeding to limits (above), % RPM R will decrease below normal operating limits.
Caution
With EPCL in LOCKOUT, engine response is much faster and TGT limiting system is inoperative.
Be careful not to exceed TGT limits and keep % RPM R and % RPM 1 and 2 operating range.
EMER APU START (C)
Caution
Before switching from main power to APU power ensure
- Mask blowers - Disconnected
- BCA MCU control knobs - Off
EMERGENCY EXITS (W)
Warning
In case emergency exit is needed and rotors are turning with a non-operational roll-trim actuator:
- Hold cyclic centered until last crew member can depart
- Exit to the right or left rear to provide greatest rotor clearance (main rotor has a 3° forward tilt)
EMERGENCY EQUIPMENT (PORTABLE) (preface)
Preface
- 3 first aid kits
- 2 hand held fire extinguishers
- 1 crash ax
EMER ENG SHUTDOWN (preface)
Preface
Usually not an immediate-action in flight unless fire exists.
Identify affected engine by checking
- ENG OUT warnings
- % TRQ
- % RPM
- Ng SPEED
- TGT TEMP
- ENG OIL PRESS
ENGINE MALFUNCTION (W)
PARTIAL
or
COMPLETE POWER LOSS
Warning
Consider single engine capability before movement of EPCL
Identify the affected engine before moving EPCL. Movement of EPCL should take at least 5 seconds, while monitoring
- ENG OUT warning
- % TRQ
- % RPM
- Ng SPEED
- TGT TEMP
Significant rotor droop resulting in generators drooping off line
or
dual failure of generators or converters
will
result in power loss of 18% maximum torque available (due to opening of engine anti-ice valve opening)
AUTOROTATIONAL AIRSPEED
Preface
Recommended airspeed - 80 KIAS
Minimum rate of descent - below 64 KIAS
Maximum glidedistance - 110 KIAS (above 70-80 KIAS)
SINGLE-ENGINE FAILURE (W, W)
Warning
If power for single engine operation is maginal or less, consider
- External stores - Jettison
- Engine Anti-ice - Off
- Cockpit Heater - Off
Warning
Do not respond to ENG OUT warning and audio until checking TGT TEMP, Ng SPEED, and % RPM 1 and 2.
DUAL-ENGINE FAILURE (W)
Warning
Do not respond to ENG OUT warnings and audio until checking TGT TEMP and % RPM R
DECREASING % RPM R (W, C, N)
Warning
Going to lockout does not remove limits for
- Maximum Fuel Flow
- Ng SPEED
If exceeding to limits (above), % RPM R will decrease below normal operating limits.
Caution
With EPCL in LOCKOUT, engine response is much faster and TGT limiting system is inoperative.
Be careful not to exceed TGT limits and keep % RPM R and % RPM 1 and 2 operating range.
Note
If % RPM R reduces from 100% to 95-96% during steady flight, check % TRQ 1 and 2.
If % TRQ 1 and 2 are equal and below Maximum Torque Available, attempt to increase % RPM R with ENG RPM trim switch.
LIGHTNING STRIKE (preface, W)
Preface
If practical, reduce airspeed to 80 KIAS. This wil reduce the criticality of having exactly 100% RPM R
Warning
Lightning strikes may result in loss of automatic flight control functions, engine controls, and/or electrical power.
TAIL ROTOR MALFUNCTIONS - GENERAL (preface)
Preface
Two general categories:
- Loss of Thrust
- Fixed Pitch Malfunction
Loss of Thrust
Headwind or left quartering crosswind component may aid maintaining heading control for landing.
Fixed Pitch Malfunctions
Attempt achieving trimmed flight at 25-145 KIAS
TAIL ROTOR QUADRANT Caution Appears (W)
in
Cruise Flight
Warning
If helicopter is shut down or hydraulic power is removed
with
one tail rotor cable failure,
then
the other tail rotor cable will disconnect
Loss of control (W)
at
Low Airspeed/Hover
or
TAIL ROTOR QUADRANT Caution Appears (Left Rotation)
Warning
Reducing collective, with EPCL in FLY, will increase left rotation.
It is critical to maintain a level attitude, preserve RPM R, and apply cushion for the landing.
